Josef gawron



(No Model.)

J. GAWRON.

' CLUTCH.

No. 511,047. Patented Dec. 19, 1893.

UNITED STATES PATENT Prion.

JOSEF GAWRON, OF BER-LIN, GERMANY, ASSIGNOR- TO MARIE GAlVRON,

OF SAME PLACE.

CLUTCH.

SPEClFIGATION forming part of Letters Patent No. 511,047, dated December i9, 1893. Application led July 17, 1893. Serial No. 480,736. (No mcdehl Patented in England September 22, 1892,No.17,162.

To a/ZZ whom zit may concern:

Be it known that I, JOSEF GAWBON, of Berlin, in the Kingdom of Prussia and German l.struction and combination of the parts forming the shaft coupling as hereinafter fully described and claimed.

In, the drawings: Figure l is a side view of the coupling partly invsection; and Fig. 2 is an end view taken in part section on the line AA in Fig. l. Fig. 3 is a side view of a modiication ot the coupling, partly in section'. Fig. 4 is a detail` side view showing a device which can be used instead of the screw shown in Fig. 3; and Fig. 5 is an end view of the saine. Fig. 6 is a side view of a second moditication of the coupling, also partly in section; and Fig. 7 is an end view of the same. Fig. Sis a detail side view of one of the screws g drawn'to a larger scale.

A shell f is permanently secured to one shaft a, which is arranged in line with the shaft Zw to which it is to be coupled. A sleeve d is secured on the shaft and is provided with tlat portions d on its periphery. C is a double-coiled friction-clutch which is mounted on the sleeve d. A collar p is secured on the sleeve to prevent the clutch C from movlng too farin one direction, and e' is a spring for forcing the clutch C toward the collar p. The Iclutch C is spliced on the sleeve d, being free to slide longitudinally and coupled cirshaft.

clutches h and It are provided with lugs which engage with the said guides f so that ,the

ciutchesrevolve with the shell j and shaft a, and are free to move longitudinally ot' the A buffer n of elastic 'material isin.- terposed between the side of the shell and the clutch h. A spring e is placed between the clutches h and h and normally holds thorn clear ot the double clutch C. A cover plate f2 is secured over the open end of the shellf, and incloses the clutches. The periphery ot the shell f may be used as a belt pulley, or it may be provided with teeth so that it may be driven by a toothed wheel or a chain. The two shafts c, and b are coupled by pressing the clutch h toward the clutch 7L. This slides the double clutch C on its sleeve, and all the friction faces off the clutches are pressed together. The spring n gives elasticity to the gripY of the clutches. The clutches are released loy the springs ,e and s when the end pressure on the 4clutch h is taken oft.

In Fig. 3, two double clutches C and C are shown, and a double clutch-ring h2 is interposed betweeu them.' As many double clutches and double clutch-rings as desired may be used, to increase the area of the friction faces of the clutches. The cltclrring slides in the guides fvand each double clutch is provided with a stop p and releasingsprings.

In Figs. l and 6, the clutch h is moved by means of screws g which engage with screwthreaded holes in the cover plate f2. The pitch of the screwthreads is made so great that the screws are revolved and forced endwise by the springs e when the clutches are released.

A toothed wheel k is journaled on the shaft b and is provided with a clutch jaw k.

Toothed wheels 2 are secured on the ends of the screws g, and gear into the wheel k. A disk m is arranged to revolve with the shaft o, and is provided with a clutch jaw Vhen the disk is slid lengthwise of the shaft I) so that the jaws fr and it engage, the wheel k is revolved and turns the wheels 2and the screws g so that the clutch h is forced toward the clutch 7L to couple the shafts a. and b as hvereinhet'ore described.

Instead oi the screws g and wheels 2 and 7a, a single sleeve e may be used as shown in Fig. 3. This sleeve e is provided with screw- `threads of very great pitch, or it may-have inclined portions eas shownin Figs. i and 5. These inclined portions e are equivalent to portions of screw/threads, and they engage with ycorrespondingly shaped parts in the cover plate f2. The friction clutches are pressed into engagement by sliding a clutch jaw into gear with the clutch jawk, the same as licieinbefore described, and the sleeve c is pushed back by the springs ,e and e when the clutch jaws fr' and 7c are separated.

In Fig. l, the disk a is not splined direct to the shaft b. A sleeve ois spliued to the shaft b and is provided with a circumferential groove. A ring q is arranged in this groove and is operated by a lever in the ordinary approved manner of sliding clutch-sleeves. The dotted line Q indicates the position of the said lever. The sleeveo is provided with a disk which bears against one side of the disk x, and G is a disk which bears against the other side of the disk so. A plate 4 encircles the sleeve 0, and 3 isaspring for causing the disks 5 and 6 to bear on the disk a; witlia yielding pressure. 5 are bolts which pass through the plate 4 and disk 6, and press the diskcc against the disk on the sleeve o. The disk a: is arranged to slip when the clutch Jaws sc and 7a are suddenly brought together,

- and the amount of the slip is regulated by increased force.

are moved to the right in Fig. 6, and the turning the bolts 5 by hand.

A modification of this device is shown in Figs. G and 7 in which the pressure on the disk of the sleeve o is increased after the clutch jaws so' and k have been moved into engagement. Ink this modification, the ring q is replaced by a sleeve q which has cams m on one end. A collar o is secured on the end of the sleeve 0 to prevent the sleeve q from slipping over its end. The bolts 5 are secu-red to the disk a: at one end, and pass Y through holes in the disks 6 and 4. The ends of the bolts have screwthreads of very great pitch, and 'w are arms provided with screwthreaded bosses which engagewith the ends of the bolts. The free ends of the arms w lie in proximity to the periphery of the sleeve o. When the sleeves o and q' are moved to the left in Fig. 1, the clutch jaws w and 7c are brought together and the cams m aie brought under the ends of the arms w. The motion of the revolving sleeve o is communicated to the disk m, which moves the bolts 5 and the arms w circumferentially of the cams m, and the arms are lifted by the cams so' that the bolts are caused to press together the disk x and the disk on the sleeve o with When the sleeves o and q clutch jaws and la are disengaged, the spring 3 releases the disks from the increased pressure, the pitch of the screwthreads on the-bolts 5 being so great as to permit the springs to move the bosses of the arms w lengthwise of the bolts.

What I claim isl. In a coupling, the combination, with a shaft a, and a shell secured thereon and provided with guides f', on the inside of its periphery of two single-cone friction-clutches sliding in the said guides, a spring forcing thesaid clutches apart, a shaft b, a sleeve secured on the said shaft Zi and provided with a stop, a doiible-cone friction-clutch splined to the said sleeve between the aforesaid clutches, a spring pressing the said double-cone clutch toward the said stop and means for forcing the said clutches into engagement, substantially as set forth.

2. In a coupling, the combination, with a shaft a, and a shell secured thereon 'and provided with guides f on the inside of its periphery, of two single-cone friction-clutches sliding in the said guides, the spring buerfri Vinterposed between the inner clutch and the side of the shell, a spring forcing the` said clutches apart, a shaft b, a sleeve secured on the said shaft b and provided with a-stop, a double-cone friction-clutch splined to the s aid sleeve between the aforesaid clutches, a spring pressing the said double-cone clutch toward the stop, and Vmeans for forcingl the said clutches into engagement, substantially as set forth.

3. In a coupling, the combination, with a shaft a, and a shell secured thereon and provided with guides f', on the inside of its periphery of two single-cone friction-clutches sliding in the said guides, a shaft l?, asleeve secured on the shaft b and provided with stops, double-cone friction-clutches splined to the said sleeve between theaforesaid clutches, a double clutch-rin g sliding in the said guides between the double-cone clutches, springs normally holding apart all the friction faces of the saidv clutches, and means for forcing the said clutches into engagement, substantially as set forth.

4-. The combination, with the partsof a friction clutch, and springs normally holding apart the said Vparts of the clutch; a plate revolving constantly with one part of the clutch, a screw of very great pitch engaging with the said plate, with its end bearing .against one part of the clutch and adapted to be revolved in one direction by the said springs, and means for revolving the said screw in .the other direction, whereby the parts of the clutch are pressed together, substantially las set forth.

5. The combination, with the parts of a friction clutch, and springs normally holding apart the said parts of the clutch; of a plate revolving constantly with one part of the clutch, the screws g of very .great .pitch engaging with the said plate and adapted -to be revolved in one direction by the said springs, the toothed wheels 2 secured on the ends -of the saidscrews, a central toothed v,wheel 7c gearing into the wheels 2 and provided with a IOO IIO

6. In a coupling, the combination, With the Y shaft b, and the revoluble clutch jaw 7c mounted thereon; of the disk mounted on the said shaft and provided with the clutch jaw fc', the sleeve o spiined on the said shaft, the disks 6 and 4' mounted on the said sleeve, the spring 3 interposed between the disks 6 n and 4, the bolts 5 secured to the disk o: and

having sorewthreads of very great pitch and passing through holes in the disks 6 and 4,

`thai arms w screwed on the ends of the said bolts, and the sliding sleeve q mounted on the sleeve o and provided with cams w for raising the said arms, substantially as and ro for the purpose set forth.

In testimonywhereof I affix my signature in presence of two witnesses.

JOSEF GAWRON.

iVitnesses:

PAUL AULICH, REINHOLD WEIDNER. 

